   	/***********************************************************************************************
	
	Copyright (c) 2005 - Alf Magne Kalleland post@dhtmlgoodies.com
	
	UPDATE LOG:
	
	March, 10th, 2006 : Added support for a message while large image is loading
	
	Get this and other scripts at www.dhtmlgoodies.com
	
	You can use this script freely as long as this copyright message is kept intact.
	
	***********************************************************************************************/ 
   	
	var displayWaitMessage=true;	// Display a please wait message while images are loading?
  	
   		
	var activeImage = false;
	var imageGalleryLeftPos = false;
	var imageGalleryWidth = false;
	var imageGalleryObj = false;
	var maxGalleryXPos = false;
	var slideSpeed = 0;
	var imageGalleryCaptions = new Array();
	function startSlide(e)
	{
		if(document.all)
			e = event;
		var id = this.id;
		//lam mui ten dam len
		//this.getElementsByTagName('IMG')[0].src = 'images/' + this.id + '_over.gif';
		if(this.id=='arrow_right')
		{
			slideSpeedMultiply = Math.floor((e.clientX - this.offsetLeft) / 5);
			slideSpeed = -1*slideSpeedMultiply;
			slideSpeed = Math.max(-10,slideSpeed);
		}
		else
		{
			slideSpeedMultiply = 10 - Math.floor((e.clientX - this.offsetLeft) / 5);
			slideSpeed = 1*slideSpeedMultiply;
			slideSpeed = Math.min(10,slideSpeed);
			if(slideSpeed<0)
				slideSpeed=10;
		}
	}
	
	function releaseSlide()
	{
		var id = this.id;
		//this.getElementsByTagName('IMG')[0].src = 'images/' + this.id + '.gif';
		slideSpeed=0;
	}
		
	function gallerySlide()
	{
		if(slideSpeed!=0)
		{
			var leftPos = imageGalleryObj.offsetLeft;
			leftPos = leftPos/1 + slideSpeed;
			//leftPos = leftPos - 2;
			if(leftPos>maxGalleryXPos)
			{
				leftPos = maxGalleryXPos;
				slideSpeed = 0;
				
			}
			if(leftPos<minGalleryXPos)
			{
				leftPos = minGalleryXPos;
				slideSpeed=0;
			}
			//doan nay quyet dinh viec chuyen dong cua slide
			imageGalleryObj.style.left = leftPos + 'px';
		}
		setTimeout('gallerySlide()',40);
		
	}		
	
	function initSlideShow()
	{
	    try
	    {
		    document.getElementById('arrow_left').onmousemove = startSlide;
		    document.getElementById('arrow_left').onmouseout = releaseSlide;
		    document.getElementById('arrow_right').onmousemove = startSlide;
		    document.getElementById('arrow_right').onmouseout = releaseSlide;
    		
		    imageGalleryObj = document.getElementById('theImages');
    		
		    imageGalleryLeftPos = imageGalleryObj.offsetLeft;
		    imageGalleryWidth = document.getElementById('galleryContainer').offsetWidth - 806;
		    maxGalleryXPos = imageGalleryObj.offsetLeft; 
		    minGalleryXPos = imageGalleryWidth - document.getElementById('slideEnd').offsetLeft;
		    gallerySlide();
	    }
	    catch(abc){}
	}
			
	window.onload = initSlideShow;